I have a pede vxl it was breaking those plastic driveshafts every battery if not more( gens axe lipo 2s 25c 5300mah) so I invested in a 75$ pair of mip cvds for it following the directions to the fullest I put them togather and mounted them 5minutes into the battery one side stops working this happaned many times with runs as short as 20seconds. Im not going throttle crazy either this is very very gentle driving. I tighten the set screws to the flat side of the diff post as tight as I can then it happens again. Seems to me I just need a set screw similar to the piece that comes with the stock driveshafts that goes thru the holes all the way then tightens down with threads. I tried the set screws from the original driveshafts are to small. if there is such a piece id LOVE a part number maybe a website to find it. really hope I didnt just waste 75$ any help advice is appreciatted and thank you ahead of time.